Date: Sun, 12 Feb 2012 23:41:38 +0400 From: Ruslan Bukin <br@bsdpad.com> To: freebsd-multimedia@FreeBSD.org Cc: Alexander Motin <mav@FreeBSD.org> Subject: Re: [RFT]: RME HDSPe AIO sound driver Message-ID: <20120212194138.GA87071@jail.io> In-Reply-To: <20120207142501.GA92130@jail.io> References: <mailpost.1328605801.1076865.63172.mailing.freebsd.multimedia@FreeBSD.cs.nctu.edu.tw> <4F30F05B.7050803@FreeBSD.org> <20120207142501.GA92130@jail.io>
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On Tue, Feb 07, 2012 at 06:25:01PM +0400, Ruslan Bukin wrote: > On Tue, Feb 07, 2012 at 11:35:23AM +0200, Alexander Motin wrote: > > Hi. > > > > First of all, thank you! > > > > On 02/07/12 11:09, Ruslan Bukin wrote: > > >This is driver for RME HDSPe AIO (PCIe - series), > > >professional-grade ($800) sound card. > > > > > >Many things not implemented (like MIDI in/out, > > >TCO, WCM and other expansion boards). > > > > > >So only analog and digital in/out are available. > > > > > >Driver registers 8 out and 7 in stereo channels, > > >each represented as separate device, ie: > > >/dev/dsp%d.p%d > > >/dev/dsp%d.r%d > > > > I think you are misinterpreting concept of channels used in > > pcm_addchan() function. These channels supposed to provide multiple > > equal playback/record streams -- hardware equivalent of vchans. If > > in your case it is different connectors and you want them to be > > independent -- you should create different PCM/dsp devices for them, > > like emu10kx or hda drivers do. > > > > >Card frequency is in range (32..192) KHz > > >and period size (32..4096) samples. > > > > > >Period size is exported to dev.pcm.%d.period > > >sysctl. > > > > Why are you duplicating here the latency control code already > > implemented in sound(4)? You should just follow buffer/block size > > given to you by the sound(4) via hdspechan_setblocksize() and then > > you can control latency in common way via hw.snd.latency_profile and > > hw.snd.latency. > > Code updated. Now snd_hdspe creates several pcm devices (childs) and follows sound(4) for latency control. Code also splitted to three files: hdspe.c hdspe.h hdspe-pcm.c http://bsdpad.com/hdspe/ -Ruslan
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